Cyclobenzaprine is used short-term to treat muscle spasms. It is usually used along with rest and physical therapy. It works by helping to relax the muscles.Flexeril (cyclobenzaprine) is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain.
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Flexeril is used together with rest and physical therapy to treat skeletal muscle conditions such as pain, injury, or spasms.
Cyclobenzaprine is a muscle relaxant. It works by blocking nerve impulses (or pain sensations) that are sent to your brain. Cyclobenzaprine is used together with rest and physical therapy to treat skeletal muscle conditions such as pain or injury. Cyclobenzaprine may also be used for purposes not listed in this medication guide.
How to use Cyclobenzaprine Tablet
Generic Flexeril (cyclobenzaprine) is a muscle relaxer that relieves pain and discomfort caused by strains, sprains, and other muscle injuries. Flexeril is commonly prescribed for short-term use, in combination with rest and physical therapy, after accidents or other circumstances where healing may be slowed by muscle strain. In some cases, Flexeril can be used to treat pain from certain musculoskeletal disorders like fibromyalgia. Flexeril is chemically related to a class of antidepressants called tricyclic antidepressants, and works by acting on the central nervous system, blocking nerve impulses (or pain sensations) that are sent from sore muscles to the brain.
Take this medication by mouth with or without food as directed by your doctor. Do not increase your dose or use this drug more often or for longer than prescribed. Your condition will not improve any faster, and your risk of side effects will increase.
The dosage is based on your medical condition and response to treatment. This medication should only be used short-term (for 3 weeks or less) unless directed by your doctor.
Tell your doctor if your condition persists after 2 to 3 weeks or if it worsens.
You should not use cyclobenzaprine if you have an allergy to the medication, a certain type of thyroid disorder (hyperthyroidism), heart block, congestive heart failure, a heart rhythm disorder, or you have recently had a heart attack.
Do not use cyclobenzaprine if you have taken an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, or tranylcypromine.
Before taking this medicine
You should not use cyclobenzaprine if you are allergic to it, or if you have:
- heart block, heart rhythm disorder, congestive heart failure; or
- if you have recently had a heart attack.
Cyclobenzaprine is not approved for use by anyone younger than 15 years old.
Do not use cyclobenzaprine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.
Some medicines can interact with cyclobenzaprine and cause a serious condition called serotonin syndrome. Be sure your doctor knows if you also take stimulant medicine, opioid medicine, herbal products, or medicine for depression, mental illness, Parkinson’s disease, migraine headaches, serious infections, or prevention of nausea and vomiting. Ask your doctor before making any changes in how or when you take your medications.
To make sure cyclobenzaprine is safe for you, tell your doctor if you have:
- thyroid disease;
- liver disease;
- enlarged prostate; or
- problems with urination.
It is not known whether cyclobenzaprine will harm an unborn baby. Tell your doctor if you are pregnant or plan to become pregnant.
It may not be safe to breast-feed while using this medicine. Ask your doctor about any risk.
Older adults may be more sensitive to the effects of this medicine.
Cyclobenzaprine is usually taken taken for up to 2 or 3 weeks. Follow all directions on your prescription label and read all medication guides or instruction sheets. Your doctor may occasionally change your dose.
Follow your doctor’s dosing instructions very carefully.
Swallow the capsule whole and do not crush, chew, break, or open it.
Call your doctor if your symptoms do not improve after 3 weeks, or if they get worse.
Store at room temperature away from moisture, heat, and light.
Take the medicine as soon as you can, but skip the missed dose if it is almost time for your next dose. Do not take two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of cyclobenzaprine can be fatal.
Overdose symptoms may include severe drowsiness, vomiting, fast heartbeats, tremors, agitation, or hallucinations.
What should I avoid while taking cyclobenzaprine?
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.
Avoid drinking alcohol. Dangerous side effects could occur.
Cyclobenzaprine side effects
Get emergency medical help if you have signs of an allergic reaction to cyclobenzaprine: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
- fast or irregular heartbeats;
- chest pain or pressure, pain spreading to your jaw or shoulder; or
- sudden numbness or weakness (especially on one side of the body), slurred speech, balance problems.
Seek medical attention right away if you have symptoms of serotonin syndrome, such as: agitation, hallucinations, fever, sweating, shivering, fast heart rate, muscle stiffness, twitching, loss of coordination, nausea, vomiting, or diarrhea.
Serious side effects may be more likely in older adults.
Common cyclobenzaprine side effects may include:
- drowsiness, tiredness;
- headache, dizziness;
- dry mouth; or
- upset stomach, nausea, constipation.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Using cyclobenzaprine with other drugs that make you drowsy can worsen this effect. Ask your doctor before using opioid medication, a sleeping pill, a muscle relaxer, or medicine for anxiety or seizures.
Tell your doctor about all your other medicines, especially:
- MAO inhibitors, such as isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, or tranylcypromine;
- Any antidepressant or anxiety medications;
- bupropion (Zyban, for smoking cessation or Wellbutrin, for depression);
- cold or allergy medicine that contains an antihistamine (Benadryl and others);
- medicine to treat Parkinson’s disease;
- medicine to treat excess stomach acid, stomach ulcer, motion sickness, or irritable bowel syndrome;
- medicine to treat overactive bladder; or
- bronchodilator asthma medication.
This list is not complete. Other drugs may interact with cyclobenzaprine, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed here.